Publications by authors named "Ui-Jun Park"

Article Synopsis
  • Postoperative delirium (POD) is a serious complication affecting nearly 1 in 5 patients after noncardiac surgery, with various preoperative and perioperative factors influencing its risk.
  • A comprehensive analysis included data from 21 studies with over 8,000 patients to identify which risk factors significantly contribute to the development of POD.
  • Key risk factors for POD identified include older age, higher ASA status, low body mass index, history of delirium, preoperative cognitive impairment, and elevated C-reactive protein levels.
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The aims of this study were to examine the incidence, risk factors, and outcomes of deep vein thrombosis (DVT) after shoulder arthroplasty in Korean patients. A total of 265 patients who underwent shoulder arthroplasty were included. The mean age of the patients was 74.

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Background: Thrombi are common in steno-occlusive lesions of infrainguinal atherosclerotic diseases. Despite the easy passage of guidewires through these lesions, conventional ballooning or stenting cannot effectively treat them, and patients are at risk of distal embolization. This study aimed to investigate the clinical outcomes of using a rotational aspiration atherectomy system to treat infrainguinal atherosclerotic disease.

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Article Synopsis
  • This study compared the characteristics of venous thromboembolic disease (VTE) between Korean and Caucasian populations using data from two phase IV studies: XALIA-LEA (Korean) and XALIA (Caucasian).
  • The findings revealed that the Korean population was generally older, less obese, and had a higher prevalence of active cancer at baseline, with more cases of provoked VTE, but less thrombophilia compared to Caucasians.
  • Despite these demographic differences, results showed that rivaroxaban was effective in reducing major bleeding, recurrent VTE, and overall mortality for both populations, suggesting its consistent safety and efficacy across ethnic groups.
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Background: Arterial dissection is one of the mechanisms of balloon angioplasty. Although some degree of dissection is unavoidable, severe dissection that impedes blood flow decreases patency and increases the need for additional procedures. To improve the results of angioplasty, it is necessary to understand the factors related to severe dissection and make efforts to reduce its occurrence.

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Background/objective: This study's goal is to describe wound outcomes at 2 years following intervention for atherosclerotic femoropopliteal lesions in patients with ischemic tissue loss.

Methods: A retrospective review of 135 first-time endovascular procedures for chronic femoropopliteal atherosclerotic lesions related to ischemic tissue loss was performed. The final wound outcomes were categorized according to the initial wound healing, recurrence and the need of major/minor amputation.

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Purpose: The knowledge regarding the benefits of the scoring balloon (SB) in comparison to the plain balloon (PB) is limited. This study aims to elucidate the difference in efficacy between SB and PB as pre-balloon in superficial femoral artery angioplasty.

Methods: We retrospectively analyzed angiographic images of 113 lesions in 98 patients treated with endovascular surgery.

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Objectives: We aimed to compare the possible outcomes of the current (opt-in) system and an opt-out system for organ donation in South Korea using a mathematical model.

Materials And Methods: A structured questionnaire was used to investigate the decision on organ donation and family consent after brain death under the current system and an opt-out system. The survey was conducted in August 2018 by means of a voluntary survey of 100 opposite-sex married couples.

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Purpose: We investigated the effect of severe calcification of the femoropopliteal artery on intervention outcomes in patients with ischemic tissue loss.

Materials And Methods: A retrospective review of the first endovascular treatment of the femoropopliteal artery for ischemic tissue loss between May 2010 and February 2018 was performed. The calcification of femoropopliteal lesions was estimated by the Compliance 360° score, and lesions with a score of 4 were defined as severe calcification lesions.

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Background: The "mandatory choice" system is an organ donation system that forces individuals to clearly express their choice about organ donation. Although this system is widely practiced in western countries, it has not yet been implemented in many Asian countries. This study aimed to compare the possible outcomes of a mandatory choice system and the current system in Korea.

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Background: Financial incentives for deceased organ donation are associated with many controversial ethical issues. This study examines the perspectives of medical students and staff members on financial incentives for the families of brain-dead organ donors.

Methodology: A structured survey form was used between December 7, 2017 and January 28, 2018 to elicit opinions on financial incentives for the families of brain-dead organ donors.

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An absorbable vascular anastomosis device (AVAD) was fabricated and tested in pig liver transplantation experiments. We prepared biodegradable copolymers with various ratios of L-lactide: glycolide and tested their properties including inherent viscosity, in vitro biodegradation, and tensile strength. The mechanical and physical properties of the finally selected copolymers were analyzed according to decomposition time.

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Late occurrence of arterial aneurysms following ligation of a hemodialysis arteriovenous fistula (AVF) is rare. Here, we report the case of 51-year-old male patient with an AVF in which arterial aneurysms developed. The patient had undergone left arm radiocephalic (RC) AVF creation for hemodialysis in 2000.

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Flush ostial occlusion of the superficial femoral artery (SFA) is challenging for endovascular treatment. Neither ipsilateral nor contralateral access is easy. The drawback of ipsilateral common femoral artery (CFA) access is that the CFA is too short for catheter manipulation and sheath engagement.

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Objectives: The aim of this study is to investigate the impact of tibial runoff on outcomes of femoropopliteal interventions for atherosclerotic lesions.

Methods: A retrospective review of 243 endovascular procedures for femoropopliteal atherosclerotic lesions on 243 limbs of 197 patients was performed.

Results: The distribution rates of good tibial runoff (runoff score <7) and poor tibial runoff (runoff score ≥7) were 37.

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Background/objective: This study aimed to investigate the outcomes of femoropopliteal interventions in relation to various influencing factors.

Methods: A retrospective review of 243 endovascular procedures for femoropopliteal atherosclerotic lesions on 243 limbs of 197 patients was performed.

Results: In patients with claudication, the TLR free rates at 1-, 3-, and 5-year intervals were 89.

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Background/objective: This study aims to investigate the effects of phased education on attitudes toward organ donation and willingness to donate after brain death.

Methods: A survey was conducted using a questionnaire to examine attitudes toward organ donation of the families of patients admitted to a surgical intensive care unit (SICU) between March 1, 2014 and September 30, 2016.

Results: Ninety-two people voluntarily participated in this survey.

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BACKGROUND This study examined the attitude of patients' relatives in South Korea toward organ donation after brain death. MATERIAL AND METHODS A structured questionnaire was used to obtain the information on the attitude toward organ donation for relatives of patients who were admitted to the surgical intensive care unit (SICU) between March 1, 2014 and September 30, 2016. In total, 92 persons participated voluntarily.

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Purpose: Use of a composite graft combining a polytetrafluoroethylene graft with an autogenous vein is an option for limb salvage in the absence of an adequate single segment vein graft. We aimed to investigate the results of infrainguinal bypass with a composite graft.

Materials And Methods: We retrospectively reviewed 11 infrainguinal arterial bypasses on 11 limbs which underwent surgery from March 2012 to November 2016.

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Purpose: Ischemic preconditioning (IPC), including remote IPC (rIPC) and direct IPC (dIPC), is a promising method to decrease ischemia-reperfusion (IR) injury. This study tested the effect of both rIPC and dIPC on the genes for antioxidant enzymes and endoplasmic reticulum (ER) stress-related proteins.

Materials And Methods: Twenty rats were randomly divided into the control and study groups.

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Lower extremity deep vein thrombosis is a serious medical condition that can result in death or major disability due to pulmonary embolism or post-thrombotic syndrome. Appropriate diagnosis and treatment are required to improve symptoms and salvage the affected limb. Early thrombus clearance rapidly resolves symptoms related to venous obstruction, restores valve function and reduces the incidence of post-thrombotic syndrome.

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Background: Kidney transplantation (KT) is the treatment of choice for end-stage renal disease patients. The spouse is a major donor in living KT. Clinical outcomes of spousal donor KT are not inferior to those of living related donor KT.

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To develop a simple and accurate delirium prediction score that would allow identification of individuals with a high probability of postoperative delirium on the basis of preoperative and immediate postoperative data.Postoperative delirium, although transient, is associated with adverse outcomes after surgery. However, there has been no appropriate tool to predict postoperative delirium.

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We report 2 cases of pseudostenosis of the external iliac artery (EIA) combined with aortoiliac occlusive disease. Both cases were treated successfully by aortobi-iliac bypass surgery instead of aortobi-femoral bypass. Pseudostenoses of the EIA disappeared in the postoperative computed tomographic angiography.

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Hepatopulmonary syndrome (HPS) is a serious complication of end-stage liver disease, which is characterized by hypoxia, intrapulmonary vascular dilatation, and liver cirrhosis. Liver transplantation (LT) is the only curative treatment modality for patients with HPS. However, morbidity and mortality after LT, especially in cases of severe HPS, remain high.

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